Justin
So perhaps XJ3D may make VRML97.jar redundant after all! (because it was the
file loading that was so slow as to be the basic reason to keep it in use).
Well done.
What would be the simplest way to give this a try. Is the early M5 expected
soon?
Alex Bowden
> -----Original Message-----
> From: Discussion list for Java 3D API
> [mailto:[EMAIL PROTECTED]]On Behalf Of Justin Couch
> Sent: 23 April 2002 10:19
> To: [EMAIL PROTECTED]
> Subject: [JAVA3D] Xj3D parsing speed fixed....
>
>
> WOOOHHOOOOO!!!!
>
> Amazing what you discover by accident......
>
> While running a profiler over the code to see where our memory was going
> to with the IFS, we noticed an awful lot of memory was going to a couple
> of really low-level classes like int[]. Doing some back tracing we
> decided to change one line of code:
>
> protected VRMLFieldParser fieldParser
>
> to
>
> protected static VRMLFieldParser fieldParser
>
>
> Low and behold, our test file that was taking 30+ seconds to load now
> takes about 4. In addtion, our memory usage which was 110MB is now 28MB.
>
> Basically, we started sharing instances of the low-level field parsing
> code, which is generated by JavaCC. There's a lot of extra stuff
> floating around and the way we use the instance means that it will never
> suffer re-entrancy problems.
>
> This code is only in CVS currently, but we're considering making an
> early M5 release because we have that, a bunch of reorganisation
> internally and all of the much requested capability bits handling to put
> out for public consumption.
>
> --
> Justin Couch http://www.vlc.com.au/~justin/
> Java Architect & Bit Twiddler http://www.yumetech.com/
> Author, Java 3D FAQ Maintainer http://www.j3d.org/
> -------------------------------------------------------------------
> "Humanism is dead. Animals think, feel; so do machines now.
> Neither man nor woman is the measure of all things. Every organism
> processes data according to its domain, its environment; you, with
> all your brains, would be useless in a mouse's universe..."
> - Greg Bear, Slant
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